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Properties of Rigid Polyurethane Foams Synthesized from 4,4  

서원진 (고려대학교 화학공학과 유변공정연구센터)
정현철 (고려대학교 화학공학과 유변공정연구센터)
김연희 (고려대학교 화학공학과 유변공정연구센터)
김우년 (고려대학교 화학공학과 유변공정연구센터)
최건형 (한국가스공사 연구개발원)
Publication Information
Polymer(Korea) / v.26, no.2, 2002 , pp. 185-192 More about this Journal
Abstract
Rigid polyurethane foams (PUFs) were prepared from polymeric 4.4'-diphenyl-methane diisocyanate (PMDI), polyether polyol, 1,4-butane diol, silicone surfactant, and distilled water. The density of the PUF was decreased from 173.7 to 41.7 kg/㎥ with an increase in distilled water from 0.5 to 3.0 php (parts per hundred polyol by weight), respectively, at the 0 php butane diol. The cell size of the PUF increased from 115 to 258 $mu	extrm{m}$ with an increase in the amount of distilled water from 0.5 to 3.0 php, respectively, at the 10 php butane diol. It was found that the compressive strength of the PUF increased with the content of distilled water, at the same density. Out of the study for the surfactant effect on the properties of the PUF, it was observed that the cell site of the PUF decreased from 360 to 146 $mu	extrm{m}$ with an increase in the amount of the surfactant from 0 to 0.33 php, respectively, but the tell size did not change significantly when the amount of the surfactant exceeded 0.33 php.
Keywords
rigid polyurethane foam; glass transition temperature; morphology;
Citations & Related Records

Times Cited By Web Of Science : 2  (Related Records In Web of Science)
Times Cited By SCOPUS : 2
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